HI I CURRENTLY HAVE A SUBARU IMPREZA STI IMPORT 1996 GETTING PROBLEMS ONLY RECENT IT SEEMS TO BE SLIGHT MISSFIRIRE/STUTTER AT LOW REVS SOON AS I GIVE IT MORE THROTTLE THROUGH BOOST ITS FINE PULLS LIKE A TRAIN CAN ANYONE HELP ITS HAD RECENT SERVICE I HAVE CHANGED HT LEADS.CLEANED BOOST SOLENOID ANY HELP WOULD BE GRATEFULL